https://www.potterybarn.com/products/indio-metal-square-firepit-table/?cm_src=rel 

Normals are adjusted using Weighted Normals, you can reset the settings using the Edit Normals modifier

Version Corona 7, VRay 5
Materials CoronaLegacyMtl + Vray
In CoronaRender versions 6 and below: CoronaLegacyMtl=CoronaMtl

Those who work in a V-Ray version lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR (GGX), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whichever is preferable for you.

For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of the materials is adjusted taking into account PBR.